Tire

Abstract

The utility model discloses a tire, which relates to the technical field of tire production and comprises a tire crown, a tire bead is arranged on one side of the tire crown, a tire side is arranged on the outer side of the tire bead and extends outwards to the tire crown along the radial direction of the tire bead, a tire body reinforcing part is arranged on one side, close to the tire bead, of the tire side, and the tire further comprises a rubber reinforcing part. The rubber reinforcing part is arranged between the tire body reinforcing part and the tire side wall, the rubber reinforcing part is formed in the circumferential direction of the tire bead, the rubber reinforcing part is connected with the tire side wall, the tire bead and the tire body reinforcing part, and the rubber reinforcing part is made of a rubber mixture. According to the utility model, the rubber reinforcing piece has the characteristic of low heat generation, and the stress at the tire side part is effectively dispersed and the heat concentration at the tire side part is reduced through reasonable dislocation of the joint positions of all parts, so that the rolling resistance performance of the tire is further improved, and the rolling resistance of the tire can be reduced while the rigidity of the tire side and the tire bead of the tire is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire production technical field, and specifically is a tire. BACKGROUND

[0002] In recent years, with the substantial growth of the world's car volume, the proportion of vehicle energy consumption in the entire oil consumption is also increasing, and a considerable part of the automobile fuel consumption is used to overcome the tire friction resistance, according to statistics, the CO2 released in the tire friction heating process accounts for 3% of the global fossil fuel released greenhouse gas, therefore, through improving the tire to realize the energy saving and emission reduction of the automobile has become the important work of the tire company.

[0003] The tire rolling resistance can be reduced by using low hysteresis material, reducing the tire weight and other methods, but the existing technical scheme ( Figure 1 ), the tire includes a crown 10, two sidewalls 20, two beads 40 and at least one body reinforcement 30, the crown 10 includes a tread rubber layer 11 and a crown reinforcement 12, the above scheme cannot consider other performance requirements of the tire, and there are some shortcomings: by improving the tread to reduce the rolling resistance, and then the wear resistance and the grip of the tire will be affected, by reducing the tire weight to reduce the rolling resistance, and then the safety of the tire will be affected.

[0004] Based on this, a tire is provided, which can eliminate the drawbacks of the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a tire to solve the problem of tire in the background art that is inconvenient to reduce tire rolling resistance.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A tire, comprising a crown, one side of the crown is provided with a bead, the outer side of the bead is provided with a sidewall, and the sidewall extends radially outward to the crown along the bead, and one side of the sidewall close to the bead is provided with a body reinforcement;

[0008] Further comprising a rubber reinforcement, the rubber reinforcement is arranged between the body reinforcement and the sidewall, and the rubber reinforcement is formed along the circumference of the bead, the rubber reinforcement is connected with the sidewall, the bead and the body reinforcement, and the rubber reinforcement is made of rubber mixture;

[0009] The distance from the cross-sectional horizontal axis of the tire to the bead baseline is L, and the distance between the center point of the rubber reinforcement and the rim protection point is a, and a is 15±3mm;

[0010] The reinforcing layer is arranged between the rubber reinforcing element and the carcass reinforcing element, and is a plurality of layer reinforcing structure, wherein the length between the end points of any two of the reinforcing layer on one side is b, b is 5-20 mm, and the length of any one of the reinforcing layer is c, c≥1 / 2L.

[0011] Preferably, the crown comprises a tread rubber layer and a crown reinforcing element, two ends of the tread rubber layer are connected with the periphery of the sidewall respectively, and the crown reinforcing element is covered on the tread rubber layer along the tire circumferential direction.

[0012] Preferably, the bead comprises a bead wire and a bead filler, the bead filler is arranged at the end of the sidewall, the bead wire is arranged in the interior of the bead filler, and the bead wire is in a circular ring shape.

[0013] Preferably, the sidewall comprises a sidewall rubber and a bead filler, the sidewall rubber is wrapped outside the bead filler, the bead filler is arranged at one end of the sidewall rubber, the parting surface formed by the sidewall rubber, the rubber reinforcing element and the bead filler extends in the tire radial direction and the tire inner direction, and the sidewall rubber adopts a rubber material with a Shore hardness not greater than 52HA in a vulcanized state.

[0014] Preferably, the radial height of the whole tire is H, the radial height of the bead filler is KA, 7%H≤KA≤15%H, the radial height of the upper end point of the rubber reinforcing element is KB, KB≤25%H, and the radial height of the upper end point of the bead filler is KC, KC≤20%H.

[0015] Preferably, the reinforcing layer is made of nylon or polyester.

[0016] Compared with the prior art, the utility model has the advantages of the following:

[0017] In the utility model, the rubber reinforcing element is arranged between the carcass reinforcing element and the sidewall and formed along the circumferential direction, the rubber reinforcing element has low heat generation characteristics, the stress of the sidewall part is effectively dispersed through the reasonable dislocation of the joint positions of the components, the heat concentration of the sidewall part is reduced, and the rolling resistance performance of the tire is improved, so that the rolling resistance of the tire can be reduced while maintaining the rigidity of the sidewall and the bead of the tire. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the prior art.

[0019] Figure 2 It is a tire radial section view of the utility model.

[0020] Figure 3 It is a structural schematic view of the utility model.

[0021] Figure 4 This is an enlarged view of the tire bead of this utility model.

[0022] Figure 5 This is a schematic diagram of the tire sidewall and rubber reinforcement of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0024] Figure 7 This is a schematic diagram of the reinforcing layer of this utility model.

[0025] Figure labeling notes: 10, tire crown; 11, tire tread rubber layer; 12, tire crown reinforcement; 20, tire sidewall; 21, tire sidewall rubber; 22, bead protector; 30, tire carcass reinforcement; 40, tire bead; 41, tire bead wire; 42, tread bead; 50, rubber reinforcement; 60, reinforcing layer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] In this embodiment, as Figures 2-5 As shown, a tire includes a crown 10, a bead 40 is provided on one side of the crown 10 for contacting a mounting rim to secure the tire to the rim, a sidewall 20 is provided on the outer side of the bead 40 and extends radially outward along the bead 40 to the crown 10, and a carcass reinforcement 30 is provided on the sidewall 20 near the bead 40.

[0029] It also includes a rubber reinforcement 50, which is disposed between the carcass reinforcement 30 and the sidewall 20, and is formed circumferentially along the bead 40. The rubber reinforcement 50 is connected to the sidewall 20, the bead 40 and the carcass reinforcement 30. The rubber reinforcement 50 is made of a rubber mixture. The elastic modulus E' and viscous modulus E” of the rubber mixture at 60°C meet certain conditions: E”≤0.3*E”*(E'-0.4*E”)-0.4MPa. The loss factor E” / E' of the rubber mixture at 60°C is set to tanδ, that is, tanδ≤0.05. The elastic modulus E', viscous modulus E” and tanδ are dynamic properties known to those skilled in the art.

[0030] Among them, such as Figure 6 and Figure 7As shown, it also includes a reinforcing layer 60, which is disposed between the rubber reinforcement 50 and the carcass reinforcement 30. The reinforcing layer 60 is a multi-layer reinforcing layer structure, wherein the length between the endpoints on one side of any two reinforcing layers 60 is set as b, where b is 5-20mm, and the length of any one reinforcing layer 60 is c, where c≥1 / 2L. High-viscosity adhesive is used so that the reinforcing layer 60 can firmly bond the adhesion between the rubber reinforcement 50 and the carcass reinforcement 30 at the lower bead of the tire, thereby reducing shear force, improving the dispersion of circumferential adhesion force of the bead 40, improving premature delamination of the bead, and enhancing the durability of the bead 40.

[0031] Among them, such as Figure 4 and Figure 5 As shown, the rubber reinforcement 50 can be combined with the tire sidewall 20 through precise production positioning. It can be directly produced by the tire sidewall extruder, which facilitates the improvement of production quality and efficiency. The distance from the horizontal axis of the tire section to the baseline of the bead 40 is set as L, and the distance between the center point of the rubber reinforcement 50 and the rim protection point is set as a, where a is 15±3mm. This can reduce the friction between the bead 40 and the bead protector 22, so that the rubber reinforcement 50 has the characteristics of low heat generation and high viscosity modulus.

[0032] Among them, such as Figure 2 and Figure 3 As shown, the tire crown 10 includes a tread rubber layer 11 and a tire crown reinforcement 12. The two ends of the tread rubber layer 11 are respectively connected to the periphery of the tire sidewall 20. The tire crown reinforcement 12 covers the tread rubber layer 11 along the tire circumference. The tire crown reinforcement 12 is formed by steel wire and nylon fiber along the tire circumference.

[0033] Among them, such as Figures 2-4 As shown, the tire bead 40 includes a tire bead wire 41 and a triangular rubber 42. The triangular rubber 42 is located at the end of the tire sidewall 20 and is used to prevent the tire from being damaged by mechanical force, atmospheric action and moisture. The tire bead wire 41 is arranged inside the triangular rubber 42. The tire bead wire 41 is circular and can firmly fix the tire to the rim, so that they are joined together.

[0034] Among them, such as Figure 2 and Figure 5 As shown, the sidewall 20 includes a sidewall rubber 21 and a bead protector 22. The sidewall rubber 21 covers the outside of the triangular rubber 42, and the bead protector 22 is located at one end of the sidewall rubber 21. The parting surface formed by the bead protector 22, the sidewall rubber 21, and the rubber reinforcement 50 extends in the radial direction of the tire and in the inner direction. The sidewall rubber 21 is made of rubber material with a Shore hardness of no more than 52HA in the vulcanized state. Through the reasonable misalignment of the joint positions of each component, the stress in the sidewall 20 is effectively dispersed, the heat concentration in the sidewall 20 is reduced, and the rolling resistance performance of the tire can be improved.

[0035] wherein as shown in Figure 2 and Figure 3 As shown in the drawings, the radial height of the whole tire is set as H, the radial height H is defined as the radial distance between the radially innermost point when the tire is mounted on the rim and the radially outermost point of the crown 10, the radial height of the apex 42 is set as KA, 7% H≤KA≤15% H, the radial height of the upper end point of the rubber reinforcing member 50 is set as KB, KB≤25% H, the radial height of the upper end point of the bead filler 22 is set as KC, KC≤20% H, and the rubber reinforcing member 50 and the apex 42.

[0036] According to the present embodiment 1, a known 205 / 55R16 specification tire without the rubber reinforcing member 50 structure is selected to perform a rolling resistance test comparison experiment with the tire in the above embodiment 1. The rolling resistance result of the 205 / 55R16 specification tire is 8.6, and the rolling resistance result of the tire in the present embodiment 1 is 7.5, achieving the purpose of improving the rolling resistance performance of the tire.

[0037] Embodiment 2

[0038] The difference from the embodiment 1 is that, as shown in Figure 7 The reinforcing layer 60 is made of nylon or polyester material, which can improve the rolling resistance performance of the tire.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tire comprising a tire crown (10), one side of the tire crown (10) being provided with a tire bead (40), an outer side of the tire bead (40) being provided with a tire side (20), and the tire side (20) extending radially outward to the tire crown (10) along the tire bead (40), one side of the tire side (20) close to the tire bead (40) being provided with a tire body reinforcement (30); characterized in that further comprising a rubber reinforcement (50), the rubber reinforcement (50) being arranged between the tire body reinforcement (30) and the tire side (20), and the rubber reinforcement (50) being circumferentially formed along the tire bead (40), the rubber reinforcement (50) being connected with the tire side (20), the tire bead (40) and the tire body reinforcement (30); a distance from a section level axis of the tire to a base line of the tire bead (40) being set as L, a distance between a center point of the rubber reinforcement (50) and a rim protection point being set as a, and a being 15±3mm; further comprising a reinforcing layer (60), the reinforcing layer (60) being arranged between the rubber reinforcement (50) and the tire body reinforcement (30), the reinforcing layer (60) being a structure of several layers of reinforcing layers, a length between end points of one side of any two of the reinforcing layers (60) being set as b, b being 5-20mm, and a length of any one of the reinforcing layers (60) being c, c≥1 / 2L.

2. Tyre according to Claim 1, characterized in that, The tire crown (10) comprises a tread rubber layer (11) and a tire crown reinforcement (12), two ends of the tread rubber layer (11) being connected with peripheries of the tire side (20) respectively, and the tire crown reinforcement (12) being covered on the tread rubber layer (11) along a tire circumferential direction.

3. The tire of claim 1, wherein, The tire bead (40) comprises a tire bead steel wire (41) and a bead filler (42), the bead filler (42) being arranged at an end of the tire side (20), the tire bead steel wire (41) being arranged inside the bead filler (42), and the tire bead steel wire (41) being in a circular ring shape.

4. Tyre according to Claim 3, characterized in that, The tire side (20) comprises a tire side rubber (21) and a bead filler protector (22), the tire side rubber (21) being covered outside the bead filler (42), the bead filler protector (22) being arranged at one end of the tire side rubber (21), a parting surface formed by the bead filler protector (22), the tire side rubber (21) and the rubber reinforcement (50) extending in a tire radial direction and a tire inner direction, and the tire side rubber (21) being made of a rubber material with a Shore hardness not greater than 52HA in a vulcanized state.

5. Tyre according to Claim 4, characterized in that, A radial height of the whole tire is set as H, a radial height of the bead filler (42) is set as KA, 7%H≤KA≤15%H, a radial height of an upper end point of the rubber reinforcement (50) is set as KB, KB≤25%H, and a radial height of an upper end point of the bead filler protector (22) is set as KC, KC≤20%H.

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